Fiche publication
Date publication
janvier 2020
Journal
Antioxidants (Basel, Switzerland)
Auteurs
Membres identifiés du Cancéropôle Est :
Pr SCHINI-KERTH Valérie
,
Dr AUGER Cyril
Tous les auteurs :
Matute A, Tabart J, Cheramy-Bien JP, Pirotte B, Kevers C, Auger C, Schini-Kerth V, Dommes J, Defraigne JO, Pincemail J
Lien Pubmed
Résumé
The real impact of polyphenol-rich vegetable and fruit juice intake on cardiovascular health remains a matter of controversy. In the present study, rat aorta segments immersed in an organ bath (OB) were used to explore whether the total polyphenol content and/or individual phenolic compound contents of 22 commercial vegetable ( = 3) and fruit juices [(citrus ( = 5), berries ( = 10), apple ( = 2), pineapple ( = 2)] might be associated with vascular tone. Red juices (particularly blackcurrant) and lemon juice caused the most marked vasorelaxation, its amplitude being endothelium dependent or not according to the volume ratio of juice to initial OB solution V/V). At volume ratios 5% and 10%, both the juice and OB total polyphenol for all juices and total anthocyanin contents for berry juices significantly correlated with aorta vasorelaxation intensity. This was not the case for total or individual flavonols (except kaempferol) or for total or individual flavanols (except epigallocatechin gallate). If one relates our measured concentrations of individual phenolic compounds in OB to what is known about their physiological concentrations, and given our evidenced correlations between compound concentrations and vasorelaxation intensity, kaempferol, epigallocatechin gallate and peonidin-3--glucoside seem to emerge as the interesting phenolic compounds likely to be responsible for the potent vasorelaxation observed with fruit juices, and more particularly blackcurrant ones. Clinical investigation is required, however, to confirm our observations.
Mots clés
fruit and vegetable juices, phenolic compounds, rat aorta, vasorelaxation effect
Référence
Antioxidants (Basel). 2020 Jan 22;9(2):
